In areas where moles, gophers, snakes or other burrowing rats are infested, insert the spikes of the mole repellent ultrasonic into the ground and turn on the switch. Enjoy a beautiful and -free yard with these solar powered repellers. Plug and play, no tools required to install. NOTE:Charge the solar mole repellent ultrasonic in the sun for at least 2 days before installation. If you're and tired of animals your backyard or garden, you love these solar-powered animal removal devices. They are great for repelling rabbits, marmots, gophers, voles, moles, snakes, chipmunks, raccoons, squirrels and more. Solar spikes equipped with solar panels , it can absorb sunlight, work longer, save energy and save electricity. Solar rodent repellent ultrasonic a installation location that can be exposed directly to the rays of the sun has to be for using effect. Keep the solar panel clean cause a dirty panel reduce the available sunlight for battery charging. casing material ABS,so you can protect your garden even when it's raining! It can be washed by water or rain directly. Recommend an installation of the yard mole repellents on every 50 feet throughout your lawn for optimal performance.